A .sut file can't be extracted

[Auster-South-Anemoi]

OS: Ubuntu 20.04 LTS
Python version: 3.8.10
File tested: "HIMOG modified.sut" from this brush bundle
Command used:
python3 extract.py ./a
(.sut file is in the folder "a", and the folder "a" is in the same folder as the script)

Terminal output:

HIMOG modified.sut
HIMOG modified.sut
Traceback (most recent call last):
  File "extract.py", line 71, in <module>
    main()
  File "extract.py", line 68, in main
    extract_sqlite_layers(sys.argv[1]+"/"+m_file)
  File "extract.py", line 46, in extract_sqlite_layers
    cur.execute("select _PW_ID, FileData from MaterialFile")
sqlite3.OperationalError: no such table: MaterialFile

[Loperamide]

I dont think a 'sut' file is the same as a CSP file...
It also is a SQLite database, but not with the same tablenames.
Didn't find any image in any table...

[Loperamide]

Some of the sut files in the pack have this table, but not all... Another strange brush format 😅